How to upgrade assembly plant or furnace?

[DanSol]

Hi All,

I can't understand and find any information how to update assembly plant and furnace without demolition of them.
Is there in the game any way for upgrade?

Thanks,
DanSol.

[FishSandwich]

Just place the new building over the old one.

[DanSol]

Thanks!
I knew it should be easy! But It's too easy! I was unable to imagine!